Process of making soap.



UNITED STATES ATENT, OFFICE.

TOMMASO PARZIALE, OF ALEXANDRIA, EGYPT.

PROCESS OF MAKING- SOAP.

SPECIFICATION forming part of Letters Patent No. 700,229, dated May 20,1902.

Application filed August 18, 1900. Serial No. 27,336. (No specimens.)

" Be it known that I, TOMMASO PARZIALE, a

' subject of the King of Italy, residing at'Alexandria, Egypt, haveinvented certain new and useful Improvements in the Manufacture of Soap,of whichthe following isa specification. This invention relates to themanufacture of soap having an oleaginous base, andin carry.-

of the ammonia-gases is to, be found-in the chemical reaction betweenthe nitrogenous matters of the flour-and the caustic alkali. The mixturethus prepared cold is now left to stand for fiverto six hours. Thepurpose "is to avoid the formation of small lumps.

The rest after mixing serves to facilitate perfect amalgamation.vThereupon a'solution is added of a caustic base or sodium hydrate,

(soda of 30 Baum,) about fifty per cent., by

volume, and the mixture is thoroughly agitated. When furrows begin toshow behind the beater, the mixture is placed in special boxes, in whichit is left for three days, after which time it may be cut in the usualmanner. To the solution of caustic soda or sodium hydrate (formula NaOH)may be added silicate of soda, alum, talc, cocoanut-oil, suit ableperfume or essence, and the like, according to whether 'it is intendedto prepare a cheap soap or one that is perfumed. There may be addedsilicate of soda or talc, besides other oils or-essences, 850.,according to whether cheaper soap has to be produced or perfumed soap.This will facilitate the development of an ammoniacal gas. Thisproportion of talc and carbonate of lime may be from twenty to thirtypercent. If it is desired'to obtain a soap as hard asthatmauufactured fromolive-oil, twenty percent. of

silicate ofsoda is added. 1

"It is immaterial whether the vessel is of iron or zinc.

The'ammonia-gas is derived from the chem-- ical reaction resulting fromthe combination of the nitrogenous matters (in floury condition) withthe materials of the, alkaline and caustic base, (NaOH.) To increasethedevelopment of this gas, it is only 'necessary to add tothenearly-condensed soapy mass two half water and one-half alum in awell-mixed condition. As a consequence ofthis last addition andtheqreaction brought about th'ere by after about three days the soaplhas lost all its causticity,]beca'use the excess of hydrates hasevaporated as gas, and thus a neutral soda oleate is obtained.

,Zinc is the material of which the vessel is formed, since this metal isless liable to corrode through the action of the causticalkali. Themixture of oil-and flour after having per cent. of a hot solution,consisting of onebeen worked in a cold state must rest from five to sixhours, so that there may be brought about an absorption of thoseparts'w-hich are the most difficult ones to be absorbed-above reactionof the saponification.

I claim as myinvention- The process described consisting in mixing coldcotton-seed oil and flour containing gluten together, allowing themixture to stand all, the glycerin-in order to facilitate, the

and then mixing with the said mixture caustic soda, substantiallyasdescribed.

TOMMASO PARZIALE.

Witnesses:

EDUARD VAN DIEREN, EMILE CAPRARA.

